固体の一次元増分衝撃理論

概要

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An elastic-plastic viscoplastic constitutive equation for static preloaded materials subjected to dynamic loading is proposed, from which an equation for the speed of an incremental impulsive stress wave is derived. Using the proposed equation, the proposed theory predicts that the slope of the incremental dynamic stress-strain curve dσ/dε coincides with the modulus of longitudinal elasticity Ε at the beginning point of incremental impact, and thereafter, decreases with increasing incremental strain. Using the derived equation, the proposed theory predicts that speed of the precursor of the incremental impulsive stress wave coincides with that of the longitudinal elastic stress wave c_0 at the beginning point of incremental impact, and thereafter, speed of the incremental impulsive stress wave corresponding to any strain except ealstic strain decreases with increasing strain. Using both equations, relation between incremental dynamic stress-strain curves and the speed of an incremental impulsive stress wave is theoretically derived, which agrees with experimental results.
一般社団法人日本機械学会の論文
1996-06-25